Power supply



FIG. 1 is a top perspective view of the power supply, showing the new design, with flaps in an open position;

FIG. 2 is a top perspective view of the power supply, showing the new design, with flaps in a closed position;

FIG. 3 is a bottom perspective view thereof;

FIG. 4 is a top view thereof, with flaps opened;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof, with flaps opened;

FIG. 7 is a left side view thereof, with flaps closed;

FIG. 8 is a right side view thereof;

FIG. 9 is a front view thereof; with flaps opened;

FIG. 10 is a front view thereof, with flaps closed; and,

FIG. 11 is a back view thereof.

The broken lines shown in the figures depict portions of the power supply that form no part of the claimed design. 

CLAIM The ornamental design for a power supply, as shown and described. 